Change data type of index counter from I to CHAR in internal table

Hi Experts,

I have an internal table with an index counter of type I. Now at runtime, I want to pass the index counter of type I to a variable with type char so that I can use it for the transfer statement. I'll be passing all the fields in the internal table, only that the index counter must be changed to type char. How do I go about this? Thank you.

Regards,

Kath